- 您现在的位置：买卖IC网 > PDF目录67761 > M34519M8-XXXFP 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 PDF资料下载
参数资料
| 型号： | M34519M8-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| 封装： | 0.450 INCH, 0.80 MM PITCH, PLASTIC, SSOP-42 |
| 文件页数： | 63/138页 |
| 文件大小： | 1146K |
| 代理商： | M34519M8-XXXFP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页当前第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页
Rev.3.01
2005.06.15
page 28 of 160
REJ03B0007-0301
4519 Group
(4) Notes on External 0 interrupt
Note [1] on bit 3 of register I1
When the input of the INT0 pin is controlled with the bit 3 of reg-
ister I1 in software, be careful about the following notes.
Depending on the input state of the P30/INT0 pin, the external 0
interrupt request flag (EXF0) may be set when the bit 3 of regis-
ter I1 is changed. In order to avoid the occurrence of an
unexpected interrupt, clear the bit 0 of register V1 to “0” (refer to
Figure 18 ) and then, change the bit 3 of register I1.
In addition, execute the SNZ0 instruction to clear the EXF0 flag
to “0” after executing at least one instruction (refer to Figure 18
).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ0 instruction (refer to Figure 18 ).
LA
4
; (02)
TV1A
; The SNZ0 instruction is valid ...........
LA
8
; (12)
TI1A
; Control of INT0 pin input is changed
NOP
...........................................................
SNZ0
; The SNZ0 instruction is executed
(EXF0 flag cleared)
NOP
...........................................................
: these bits are not used here.
Fig. 18 External 0 interrupt program example-1
Note [2] on bit 3 of register I1
When the bit 3 of register I1 is cleared to “0”, the RAM back-up
mode is selected and the input of INT0 pin is disabled, be careful
about the following notes.
When the input of INT0 pin is disabled (register I13 = “0”), set the
key-on wakeup function to be invalid (register K20 = “0”) before
system enters to the RAM back-up mode. (refer to Figure 19).
LA
0
; (02)
TK2A
; Input of INT0 key-on wakeup invalid ..
DI
EPOF
POF
; RAM back-up
: these bits are not used here.
Fig. 19 External 0 interrupt program example-2
Note on bit 2 of register I1
When the interrupt valid waveform of the P30/INT0 pin is
changed with the bit 2 of register I1 in software, be careful about
the following notes.
Depending on the input state of the P30/INT0 pin, the external 0
interrupt request flag (EXF0) may be set when the bit 2 of regis-
ter I1 is changed. In order to avoid the occurrence of an
unexpected interrupt, clear the bit 0 of register V1 to “0” (refer to
Figure 20) and then, change the bit 2 of register I1.
In addition, execute the SNZ0 instruction to clear the EXF0 flag
to “0” after executing at least one instruction (refer to Figure
20).
Also, set the NOP instruction for the case when a skip is per-
formed with the SNZ0 instruction (refer to Figure 20).
LA
4
; (02)
TV1A
; The SNZ0 instruction is valid ...........
LA
12
; (12)
TI1A
; Interrupt valid waveform is changed
NOP
...........................................................
SNZ0
; The SNZ0 instruction is executed
(EXF0 flag cleared)
NOP
...........................................................
: these bits are not used here.
Fig. 20 External 0 interrupt program example-3
相关PDF资料 |
PDF描述 |
|---|---|
| M34519M6-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO42 |
| M34553M8H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553M4-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553G8HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48 |
| M34553M4H-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M34-52 | 制造商:GAMEWELL-FCI 制造商全称:GAMEWELL-FCI 功能描述:Three-Fold Fire Alarm Boxes and Transmitters |
| M34524EDFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34524M8-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34524MC-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:4-BIT CISC SINGLE-CHIP MICROCOMPUTER 720 FAMILY / 4500 SERIES |
| M3452-C09K1 | 制造商:Bonitron 功能描述:OVERVOLTAGE BRAKING TRANSISTOR |
发布紧急采购，3分钟左右您将得到回复。